Mrs. BD thought there might be some interest in the subject of growing perennials - rather than annuals - in your containers. It's a bit late in the season to post this, but I will do so anyway, and re-post it next May, God willing.
Since it might cost $50 to pack a good-sized container with annuals, and since perennials are generally more attractive and interesting, it might be worth a try. We have occasionally been happily surprised to see perennials in containers coming back to life in Spring. The trick is overwintering them.
Here's a site that explains it all.
Photo is one of my containers, filled with about $40 of annuals. Should have tried some perennials.